ZENER VARIDRIVE SOLUTIONS
ZENER ECODRIVE® 8000
IM00130
P a g e
| 8
20/07/2018 3:59 PM
STANDARD APPLICATIONS
Application – Tank Fill
The ECODRIVE is configured to pump and fill a tank or vessel
when the level is not full and there is sufficient solar energy
available. An AC supply can also be used to pump when
insufficient solar available.
A single float switch located in the tank closes a contact when
the water in the tank falls. When this contact closes and there
is sufficient solar energy (ie.‘SOLAR GOOD’), the ECODRIVE
will start to pump. The ECODRIVE will run at a ‘preset’ speed
or alternate speed reference. When the water level increases
and the float switch contact is open for a preset (‘qualifying
time’) time the ECODRIVE will stop the pump. The float needs
to be installed below the high water level with an allowance
for pumping for the duration of the qualifying time. This
approach means the tank is always full, not waiting for a low
level switch to turn on the pump when there may be no solar
energy available.
If the solar energy is not sufficient to maintain the desired
operating speed, the speed is reduced resulting in a lower
flow rate. When the solar energy or the speed reaches the
minimum level (ie. ‘SOLAR LO’) for a period of time
(‘qualifying time’) the ECODRIVE will switch off. When there is
insufficient voltage from the solar array the ECODRIVE will
completely shut down.
When sufficient solar energy returns the ECODRIVE will re-
power and can automatically restart the pump.
Bore/Well Level Protection:
An optional bore level protection is also available to prevent dry running the pump. When a low level is detected the ECODRIVE
will stop the pump and restart after an adjustable time period.
Irradiance Sensor:
When operating from Solar only, an irradiance sensor is optional. Without the irradiance sensor the ECODRIVE monitors the DC
bus voltage and adjusts the motor speed accordingly. When an Auxiliary AC supply is used an irradiance sensor is required.
Auxiliary AC power Supply:
During periods of ‘Lo Solar’ or no sunlight, the ECODRIVE can provide an output to connect the GRID or generator supply to
continue to operate. This may be finely tuned to achieve no interruption during changeover as the solar is always connected.
Configuration / programming:
To guide you through the setup/programming for this application refer to the following pages:
Supply & Motor Wiring
Page 13
Earthing:
Page 18
Control wiring:
Page 19
Preliminary checks:
Page 25
Programming /setup:
Solar only Solar OR AC Aux Supply Page 31
Diagram 4a: Simple Tank Fill
